Metering input boxes (YaVU)

Typical YaVU electrical diagram:

The diagram is shown for the basic YaVU-3 version with direct connection of the meter. Composition:

• QF1 — input circuit breaker (three poles for YaVU-3, rating selected according to the design current)
• PI — electronic active-energy meter (1-ph or 3-ph, direct connection up to 100 A or transformer connection via CTs)
• QF2…QFn — circuit breakers on the outgoing lines (quantity and ratings — per the technical specification)
• XT — PEN/N/PE terminal set with a sealing lug on the metering compartment

For transformer connection, the diagram additionally includes three current transformers (CTs) with ratios of 100/5, 200/5, 400/5, 600/5 or 1000/5 — depending on the design current. A detailed schematic diagram for the specific version is attached to the product data sheet.

Main parameters of the YaVU:

*At IP54 the rated current is reduced by 15% relative to the values rated for IP31, due to limited heat dissipation through the sealed enclosure.

*Approximate dimensions, weight and configuration. Final parameters are agreed at the questionnaire stage. Custom versions — per the Customer’s technical specification.

Standard YaVU configuration:

• input circuit breaker for the design current;
• a space for a direct- or transformer-connection electricity meter (DIN rail or mounting panel);
• circuit breakers on the outgoing lines;
• PEN/N/PE terminal block with a sealing lug;
• a set of sealing lugs for the metering compartment;
• mounting loops / brackets for surface mounting.

Options on request:

• current transformers (CTs) 100/5…1000/5 for indirect connection of the meter;
• surge protective devices (SPD) of class I+II;
• service socket 230 V in a separate compartment;
• heating of the metering compartment for outdoor installation (-45…-25 °C);
• LED lighting of the compartment with a door switch;
• enclosure colour — RAL 7035 (light grey) as standard, other RAL — on request.

Electricity meters:

The box is supplied without a meter. The model is determined by the technical conditions of your DSO (regional power company). All installed meters must be certified in Ukraine and entered in the DSO register.

Lead times and warranty:

Typical manufacturing time — 5-7 working days for series models, up to 14 days for custom versions*. Warranty period — 24 months from the date of commissioning*.

*Approximate lead times and conditions. The exact lead time and warranty are specified in the supply contract.